Biologia plantarum 52:365-369, 2008 | DOI: 10.1007/s10535-008-0076-6

Agrobacterium-mediated transformation in Citrullus lanatus

M.-A. Cho1, C.-Y. Moon3, J.-R. Liu2, P.-S. Choi4,*
1 Eugentech, Inc./Bioventure, Taejon, Korea
2 Plant Cell Biotechnology Laboratory, KRIBB, Taejon, Korea
3 Department of Oriental Plant Resource, Kyung Woon University, Gumi, Korea
4 Department of Medicinal Plant Resources, Nambu University, Gwangju, Korea

Agrobacterium tumefaciens-mediated transformation was used to produce transgenic watermelon. Cotyledonary explants of Citrullus lanatus Thumb (cv. Daesan) were co-cultivated with Agrobacterium strains (LBA4404, GV3101, EHA101) containing pPTN289 carrying with bar gene and pPTN290 carrying with nptII gene, respectively. There was a significant difference in the transformation frequency between bacteria strains and selective markers. The EHA101/pPTN289 showed higher transformation frequency (1.16 %) than GV3101/pPTN289 (0.33 %) and LBA4404/pPTN289 or /pPTN290 (0 %). The shoots obtained (633 and 57 lines) showed some resistance to glufosinate and paromomycin, respectively. Of them, the β-glucuronidase positive response and PCR products amplified by bar and nptII specific primers showed at least 21 plants resistant to glufosinate and at least 6 plants to paromomycin. Southern blot analysis revealed that the bar gene integrated into genome of transgenic watermelon. Acclimated transgenic watermelons were successfully transplanted in the greenhouse and showed no phenotypic variation.

Keywords: Agrobacterium strains; β-glucuronidase; glufosinate; paromomycin; transgenic watermelon
Subjects: Agrobacterium tumefaciens; auxins; Citrullus lanatus; glucuronidase, GUS histochemical assay; in vitro culture, regeneration; nutrient medium, Murashige and Skoog (MS); polymerase chain reaction (PCR); transgenic plants; watermelon

Received: April 10, 2006; Accepted: May 21, 2007; Published: June 1, 2008Show citation

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Cho, M.-A., Moon, C.-Y., Liu, J.-R., & Choi, P.-S. (2008). Agrobacterium-mediated transformation in Citrullus lanatus. Biologia plantarum, 52(2), 365-369. doi: 10.1007/s10535-008-0076-6.
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